A new audit from Pittsburgh City Controller Michael Lamb found two years worth of missing costs from the department in charge of repairing city buildings.

The missing information, which covers 2014 and 2015 in the Department of Public Work’s facilities division, along with the department’s habit of purchasing materials like lumber or roofing supplies in bulk, created an environment that could encourage theft, according to Lamb. However, the audit found no evidence that any had taken place.